Cover: The cover figure shows twinkle protein lights up mitochondrial nucleoids like stars in the clear night sky. Infantile-onset spinocerebellar ataxia (IOSCA) mutation does not change the nucleoid localization of Twinkle. Left panel shows overexpressed Twinkle in green and cell nuclei in blue. Middle panel shows mitochondrial DNA and the two panels are merged in the right panel. See A.H. Hakonen et al., pp. 3822-3835.
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